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Instrument Adaptor for Image Guided Surgery

a technology for instruments and adapted devices, applied in the field of instrument adaptors for image guided surgery, can solve the problems of considerable tracking error caused by the detent feature of the socket, and achieve the effect of accurately tracking the location of the instrument tip

Inactive Publication Date: 2012-10-11
DEPUY SYNTHES PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]The present invention relates to an adaptor for tracking an instrument's location during image guided surgery. The adaptor has a drive shaft, a proximal handle and a distal instrument tip. The drive shaft typically has a linear proximal portion, a curved mid-portion and a linear distal portion that is co-linear with the linear proximal portion. Three tracking elements (such as reflective spheres) are mounted on the shaft to form a triangle. Preferably, at least two of the tracking elements are mounted on the curved portion of the shaft. When the handle is manually rotated about the longitudinal axis, the two linear portions of the shaft remain fixed on the longitudinal axis, but the tracking element(s) on the curved portion of the shaft travel in orbits about the longitudinal axis, thereby allowing a computer to accurately track the location of the instrument tip

Problems solved by technology

The ball and detent feature of this socket produces considerable error in tracking because the attachment occurs on one side of the connection and so is not substantially radially uniform.

Method used

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  • Instrument Adaptor for Image Guided Surgery
  • Instrument Adaptor for Image Guided Surgery
  • Instrument Adaptor for Image Guided Surgery

Examples

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Embodiment Construction

[0020]Now referring to FIGS. 1A and 1B, there is provided an instrument comprising:[0021]i) an instrument adaptor 1 for use in image guided surgery, comprising:[0022]a) a proximal end portion 3 forming a handle 5,[0023]b) a distal end portion 7 comprising a connection 9 for connecting to an instrument tip, and[0024]c) an intermediate portion 11 therebetween having a shaft 13 and at least three tracking elements 15 thereon,[0025]wherein the proximal and distal end portions define a longitudinal axis (LA), and[0026]wherein the shaft comprises a curved portion 17 that deviates from the longitudinal axis, and[0027]ii) the instrument tip 21 having a distal working end portion 23 and a proximal connection portion 25,

wherein the proximal connection portion of the instrument tip is attached to the connection of the adaptor.

[0028]Now referring to FIG. 1B, there is provided an instrument substantially similar to that of FIG. 1A, but wherein each of the tracking elements is placed off the long...

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PUM

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Abstract

The invention relates to an adaptor for tracking an instrument location during image guided surgery. The adaptor has a drive shaft, a proximal handle and a distal instrument tip. The drive shaft has a linear proximal portion, a curved mid-portion and a linear distal portion that is co-linear with the linear proximal portion. Three tracking elements (such as reflective balls) are placed on the sinusoidal portion. When the handle is rotated, the two linear portions remain fixed on the longitudinal axis, but the tracking elements on the sinusoidal portion travel in orbits about the longitudinal axis, thereby allowing a computer to track the location of the instrument tip.

Description

BACKGROUND OF THE INVENTION[0001]Computer-assisted, image-guided medical and surgical navigation systems are known and used to generate images in order to guide a surgeon during a medical procedure. See, for example, U.S. Pat. Nos. 5,769,861 & 6,428,547. Such systems frequently include a tracking array that is clamped to the instrument desired to be tracked.[0002]U.S. Pat. No. 6,190,395 (“Williams”) discloses an image guided surgery (IGS) instrument having a flexible clamping band used to attach the tracking array to the instrument tip.[0003]U.S. Pat. No. 6,021,343 (“Foley”) discloses a tool for use in image guided surgery comprising an annular guide member having a trackable array and a drive shaft for rotating an instrument such as a screwdriver while keeping the array stationary. Foley discloses an IGS instrument comprising a drive shaft, a proximal handle, a distal instrument tip, a guide that rotates around the driver shaft, and a tracking array that is mounted on the guide. In...

Claims

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Application Information

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IPC IPC(8): A61B1/00
CPCA61B19/26A61B2019/5483A61B19/54A61B2090/3983A61B90/50A61B90/39
Inventor DIMAURO, THOMAS M.
Owner DEPUY SYNTHES PROD INC